Should I try:
Code:apt update --allow-unauthenticated && apt-get dist-upgrade --allow-unauthenticated
I don't think the problem is certs anymore. Lets clear the other mess out (for now):
Code:
mv /etc/apt/sources.list.d/pve-enterprise.list ~
This puts away (to your home directory) the non-usable enterprise repo. You already have the PVE no-subscription repo in.
What is weird is:
Code:Err http://archive.debian.org jessie/main amd64 Packages 404 Not Found [IP: 151.101.2.132 80]
Can you then do:
Code:
apt-get clean
apt-get update
apt-get dist-upgrade